Tape gluing machine



June 6, 1933. A D N s 1,913,022

TAPE GLUING MACHINE Filed Feb. 19, 1929 2 Sheets-Sheet l June 6, 1933. AA, DENNIS 1,913,022

TAPE GLUING MACHINE Filed Feb. 19, 1929 2 Sheets-Sheet 2 v emu-e1 toveneer, and,

Patented June 6, 1933 PATENT OFFICE .ALIRED A. DENNIS, or GRAND nArIns,MICHIGAN m Gnome MACHINE Application filed. am- 19, 1929. Serial116.341.203.

LThis invention relates to' a tape gluing machine for the purpose ofapplying glue t to a narrow tape which is used inconnecting "veneerstogether, the veneers being located in the same planewith edgesabuttingand the tapeoverlappingthe joint andgluing to the veneers at both sidesof said j oint: V t {The present invention is directed to a practicaland serviceable machine which may be usedto apply the proper amount ofglue to the tape when the tape isbeing applied to theweneers, or whichcan also be used in providing a preferred kind oftape for use for suchpurpose consisting oftwo very thin narrow lengths oftapematerial,

whichisusually paper, and gluing the same inseparably together to beafterward run through themachine in the process of applying the tape tothe veneers.

The invention is fully described in the folloWingdescfiption"andillustrated in the accompanyingdrawings, in which, PFig. 1 is a verticalsection through the tape gluing machine oflny invention! Fig. 2 is atransverse vertical section substantially on theplane of line22-ofFig.1.

Fig. is alike section substantially on the plane of line 33 of Fig. 1..1 r t i Fig, 4 is a side elevationofthe machine,

" the same being used in gluing two tape members together.

Fig. 5 isa similar side elevation illustratingthe use of the machine inapplying tape Fig. 6 is a fragmentary side elevation of thenpper part ofthemachine enlarged to better illustrate the Construction. Likereference characters refer to like I parts in the different figures ofthe draw- The machine includes in its construction a' glue holdingreceptacle 1 which is designed to be placed above a heateijindicated at2,

for maintaining the glue 3 which is held in the receptacle 1 in properheatedcondition.

1 and'at one side extends beyond it, thereby providing an opening 7 forthe passage of the tape from the machineafter the glue has been appliedthereto. Within the housing 6 a gluing roller is located which, inpractice,is made up of two'spaced apart disks 8 between which a suitablefabricrolle1"9,preferably of felt or cloth is positioned, the disksbeing connected to the ends and the felt being located around a centralsleeve 10. This roller lies above and to one side of the transfer roller4. by means of which glue is transferred from the receptacle 1.110 thefelt 9.,

The gluing rolleris mounted for free rotation on a stud shaft 11,fromwhich it may be readily removeduvhen desired. A rod 12 is carriedbyone side of the casing on which an arm 13 ispivotally mounted at oneend, the shaft 11 being connected to and extending laterally from theotherand free end of the arm 13. Thelower edge of the arm 13 is out atan angle asat 14 (see Fig. 3) and an adjusting screwlahaving ataperedinner end threads through a side of i the housing 6, the taperedend of the screw bearing against the inclined lower edge of the arm 13.The screw 15 carries a ratchet wheel 16 and an outwardly extendingoperatinghandle 17, by means of which it 8 may be turned, a spring 16aengaging with the ratchet wheel to hold the'screw in any position towhich it may be adjusted.

t The housing 6, preferably, is made of two parts, as shown in Figs. 2and3, one of the 0 same being hingedly mounted at 18 on a side ofthereceptacle 1 sojthat it may be turned to uncover the gluing rollerwhich may be removed from the shaft 11 at night during the time that themachine is not in operation. It is intended that the gluing roller,-whennot in use shall be kept inn-- mersed in water, whereby the feltorfabric 9 will always contain a considerable amount r of waterso that theglue when applied to the outside is kept softand will not hardenthereon. Also the water carrying felt or fabric 9 of the roller maybeused as a means of applying moisture to gummed tape which is used toalarge extent in veneer work and otherwise. By proper adjustment of thescrew the gluing roller may be brought into more or less intimateengagement with the transfer roller 4, and the amount of gluetransferred from the roller 4 to the gluing roller controlled inaccordance with the extent of the contact of the gluing roller with thetransfer roller, as is evident.

A curved slot 19 is cut in a side of the housing 6 thru which a curvedshoe 20 of metal, lying over and spaced a short distance from the gluingroller, extends, an arm 21 formed integral with the shoe 20 passesthrough the slot 19 and is then turned substantially at right anglesalongside of the housing 6, being mounted on a threaded stud 22 fixed toand projecting from said side of the housing, and receives a wing nut22a whereby the shoe may be adjusted to different positions with respectto the gluing roller and firmly clamped in any position to which it hasbeen adjusted. The slot 19 is covered by an are shaped guarding plate23, having a slot through which the arm 21 passes, said plate alsohaving .an arm 24 extending therefrom which is likewise mounted on thestud 22, previously described, as shown in Fig. 2.

A tape roll holding rack 25 is carried by a vertical post 26 which inturn is secured to the housing of the machine asshown in Figs. 4 and 5,the roll 27 carried by the holder thus beinglocated above the machine.The tape is carried over a guide roller 25am on the roll holder andthence downwardly around a suitable rod or other roller 28 located atthe upper end and to one side of the glue receptacle 1, through a slotin the housing of the machine, as shown in Fig. 1, over the rod 12 andthence over the shoe 20. After it passes over the shoe 20 it is carrieddownwardly to the lower edge of the housing at one side of the opening7, as shown in Fig. 1, one side of the paper contacting with the fabric9 of the glue roller, as shown. The extent to which the paper willcontact with the roller is governed by the position of shoe 20, it beingevident thatby moving the shoe to the right (referring to Fig. 1) agreater contact of the paper with the glue roller will be had. Also inthreading the paper through the machine the shoe may be adjusted farenough to one side that the tape will not contact with the roller duringthe process of threading. Preferably, the roll 27 of the paper tape isacted upon by a pivotally mounted retarding device 29 which is gravltyoperated by a weight 30 to hold the paper against aimless unwinding andto apply a suitable tension thereon which keeps the paper suflicientlytaut as it is passed through the machine.

The tape with the glue applied at one side leaves the machine and iscarried directly to the veneers 31 which are passed over a table 32between rollers 33, one of which is a driven roller, the tape lyingbetween the upper roller and the upper side of the veneers. The tapecovers the joint between the contacting edges of any two veneers andeach side of the veneers some little distance beyond the joint.Ordinarily the tape is from of an inch to an inch in width and is firmlyglued to the adjacent veneers holding them in close contact so that thesame may be properly laid upon a core when they are to be used.

In the ordinary practice of laying and gluing veneers to a core, thesame are laid with the tape side out. This method of laying veneers isopen to objections in that after the veneers are laid and properly gluedto the core the veneers must be finished on their outer sides to removethe tape which is thereafter of no use. The work of removing the tapeand sanding and finishing the veneers is considerable. The mostimportant objection, however, is that the moisture from the glue used inlaying the veneers on the core, being absorbed by the veneers at thejoint, swells the same and upon shrinkage thereafter the joint is liableto open a small amount which is very obj ectionable in the finishedproduct. a

It has been found practical and necessary to use a paper tape, the paperbeing what is known as pound paper. If the veneers are laid with thepaper inside, that is, between the core and the veneers to obviate theobjection noted, it has been found that the paper will separate betweenits upper and lower sides, that is, will divide or split, whereupon atthe joints the veneers are not securely connected to the core.

It is one object and purpose of my invention to utilize the machinedescribed for making a tape which will obviate the several objectionsnoted, and which may be used between the veneers and the core withoutthe danger of splitting. In Fig. 4 the machine is shown as gluing thelower side of a length of tape 27 while a second length of tape 27a iscarried on a second roll holder 25 mounted on the machine by a suitablehorizontal support 34. The two rolls of tape 27 and 27a are in the samevertical plane and are fed between rollers 35, the upper of which is adriven roller, so that the upper tape 27 with glue applied thereto onits lower side is brought into immediate and intimate contact with thelower tape 27a and the two thus glued together rolled into a roll 36'.

The rollers 35 preferably are both knurled at their outer surfaces andare pressed toward each other with considerable force so that the gluepenetrates the fibers of the paper and the knurls perforate the paper toa Considerable extent insuring a very intimate gluing engagement of thetwo lengths of pa per, while the perforations are very helpful when thetape is applied to the veneers in causin a better binding of the gluethereto. It is 0 course to be understood that between the rollers 35 andthe finished roll 36 of tape a suitable drier for the tape may beinterposed if it is necessary or desirable. Also in laying the tape onveneers, as indicated in Fig. 5, I have found it very desirable todirect air againstthe glued side of the tape. The air is projected froma nozzle 37 and the amount is controlled by a valve 38, it beingevidentthat the glue may be more or less dried and thickened inaccordance with the amount of air that is directed against it therebycompensating for different constituencies of glue used and variations inthick ness or body thereof. I have found that in this manner two rollsof very thin paper, known to the trade as 15 pound tissue kraft paper,may be used to provide a suitable tape for veneers and the roll 36 oftape impregnated with glue may then be laid between two adjoiningveneers by use of the machine, as shown in Fig. 5, glued to the veneers,and that veneers glued together witha two ply glued tape of thecharacter described may be laid with the tape inside or between theveneers and core, and the tape is not susceptible to separation orsplitting as is a heavier single thickness of paper tape. a

The mechanism described is very practical and serviceable andhas soproved in actual practice. Many variations in structural detail may beresorted to without departing from the invention which isdefined in theappended claims and my invention, accord ingly, is to be consideredcomprehensive of all forms of structure coming within the scope of saidclaims.

I claim:

1. In a machine of the class described, a glue holding receptacle, atransfer roller rotatably'mounted therein, a housing above thereceptacle, an arm pivotally mounted at one end at the inner side ofsaid receptacle, a gluing roller rotatably mounted within said housingat theother end of the arm, said arm at its lower edge having adownwardly and inwardly inclined cam surface, a screw having a taperedend threaded through a side of the housing, said tapered end e11- gagingwith said cam surface of the arm, a sheet metal shoe located over saidroller, an arm extending from said shoe through a side of the housing,said side of the lions ing having an are shaped slot to pass said arm,said arm being turned downwardly after passing through said slot, meansfor pivotally mounting said arm at its lower end on said housing, meansfor securing said arm and shoe in any position to which moved, and meansfor drawing a continuous length of tape through said housing over saidshoe and bringing the tape at one side in contact with th gluing roller,the extent of contact being determined by the position of the shoe withrespect to the roller.

2. In a machine of the class described, a glue holding receptacle, atransferroller rotatably mounted therein, a housing above thereceptacle, an arm pivotally mounted at one end at the innergside ofsaid receptacle, a gluing roller rotatably mounted within said housingat the other end of the arm, said arm at its lower edge having adownwardly and inwardly inclined cam surface, a screw having a taperedend threaded through a side of the housing, said tapered end engagingwitlrsaid cam surface of the arm, and means for drawing a con tinuouslength of tape through said housing and bringing the tape at one side incon; tact with the gluing roller.

8. In a tape gluing machine having a receptacle for holding glue, thecombination of, a transfer roller revolubly mounted therein, a gluingroller mounted above the transfer roller adapted to contact therewith, ashoe located over the gluing roller, means for adjusting the shoe tothree or more different positions, and means for guiding tape to andover said shoe and into contact engagement with one side of the gluingroller, the extent of contact of the tape with the gluing roller beinggoverned by the position of said shoe.

4. A machine of the class described, comprisinga glue holding receptaclehaving a portion extending upwardly, a transfer roller rotatably mountedtherein, a housing hinged to and extending over the receptacle, an armpivotally mounted on said upwardly extending portion, a gluing rollermounted on the arm and located above and adapted to contact with thetransfer roller, means for guiding a continuous length of tape throughsaid housing over the gluing roller, whereby the tape at one sidecontacts with said gluing roller, and adjustable means mounted betweenthe gluing roller and tape and over which the tape passes for governingthe extent of contact of the tape with said gluing roller.

5. A machine of the class described, comprising a glue holdingreceptacle, a housing hinged to and covering said receptacle, a gluingroller rotatably mounted in said receptacle, means to transfer glue fromsaid receptacle to said gluing roller, means for guiding a continuouslength of tape through said housing and over the gluing roller, wherebythe tape contacts at one side with said roller, and adjustable meansmounted on said housing and interposed between the roller and the tapeover which the tape passes for controlling the extent of contact of thetape with said roller.

6. In a construction of the class described, a glue holding receptacle,a cover thereover, an arm mounted at the inner side of said re ceptacle,a stud shaft extending from the arm, a gluing roller removably mountedon said stud shaft, means for transferring glue from the receptacle tosaid roller, means for guiding a continuous length of tape through saidreceptacle and over said roller to contact therewith at one side of thetape, and adjustable means mounted between the tape and the roller overwhich the tape passes for shifting the tape toward or away from theroller to govern the extent of contact therewith.

7. A construction containing the elements in combination defined inclaim 6, combined with means for readily opening said housing wherebythe roller may be removed from said stud shaft when not in use.

In testimony whereof I affix my signature.

ALFRED A. DENNIS.

